Apple USB Camera Adapter and iPad issues

[DaveKeys]

Hello folks.
Just thought I'd better share something with you. For some reason, the A1440 Apple USB to Camera adapter no longer works with Setlistmaker on my 2013 iPad Air.  That is, my keyboards are no longer receiving the patch changes. At first I thought it was a worn out adapter so I tried a brand new unused spare of the same type. Same problem.
However, when I use the A1619 USB3 Lightning to Camera Adapter, it works no problem.

To make things stranger, when I run setlistmaker on my iPhone, both the A1440 USB to Camera adapters work fine.

This would suggest the problem is peculiar to the iPad Air - but is it just my iPad Air, or are others experiencing similar issues? And is there a solution?

[DaveKeys]

Turns out it was the lightning socket on my old iPad Air at fault, so I traded it in for a new one.